<template>
  <div class="home-category" @mouseleave="currCategory.value={}">
    <ul class="menu">
      <li v-for="item in menuList" :key="item.id" :class="{active:currCategory.value&&currCategory.value.id===item.id}"
        @mouseenter="categordEvent(item.id)">
        <RouterLink :to="`/category/${item.id}`">{{item.name}}</RouterLink>
        <template v-if="item.children">
          <RouterLink v-for="sub in  item.children" :key="sub.id" :to="`/category/sub/${sub.id}`">{{sub.name}}
          </RouterLink>
        </template>
        <!-- 骨架屏占位用 -->
        <!-- <template v-else>
            <xtx-skeleton width='60px' height='18px' style="margin-right:5px" bg="rgba(255,255,255,0.2)"></xtx-skeleton>
            <XtxSkeleton width="50px" height="18px" bg="rgba(255,255,255,0.2)" />
        </template> -->
      </li>
    </ul>
    <div class="layer">
      <h4>{{currCategory.value&&currCategory.value.id==='brand'?'品牌':'分类'}}推荐 <small>根据您的购买或浏览记录推荐</small></h4>
      <ul  v-if="currCategory.value&&currCategory.value.goods">
        <li v-for="item in currCategory.value.goods" :key="item.id">
          <RouterLink to="/">
            <img :src="item.picture" alt="">
            <div class="info">
              <p class="name ellipsis-2">【定金购】严选零食大礼包（12件）</p>
              <p class="desc ellipsis">超值组合装，满足馋嘴欲</p>
              <p class="price"><i>¥</i>100.00</p>
            </div>
          </RouterLink>
        </li>
      </ul>
        <!-- 品牌 -->
      <ul v-if="currCategory.value && currCategory.value.brands && currCategory.value.brands.length">
        <li class="brand" v-for="brand in currCategory.value.brands" :key="brand.id">
          <RouterLink to="/">
            <img :src="brand.picture" alt="">
            <div class="info">
              <p class="place"><i class="iconfont icon-dingwei"></i>{{brand.place}}</p>
              <p class="name ellipsis">{{brand.name}}</p>
              <p class="desc ellipsis-2">{{brand.desc}}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
    </div>
  </div>
</template>
<script>
// 准备左侧分类组件和基础布局
// 从vuex中拿出9个分类数据，且值需要两个子分类，但是左侧是10个，需要补充一个品牌数据。
// 使用计算属性完成上面逻辑
// 渲染组件
import { useStore } from 'vuex'
import { reactive, computed } from 'vue'
// 导入api
import { findBrand } from '@/api/home'
// import xtxSkeleton from '@/components/library/xtx-skeleton.vue'
export default {
//   components: { xtxSkeleton },
  name: 'HomeCategory',
  // 1. 获取vuex的一级分类，并且只需要两个二级分类
  // 2. 需要在组件内部，定义一个品牌数据
  // 3. 根据vuex的分类数据和组件中定义品牌数据，得到左侧分类完整数据(9分类+1品牌)数组
  // 4. 进行渲染即可
  setup () {
    const brand = reactive({
      id: 'brand',
      name: '品牌',
      children: [{ id: 'brand-children', name: '品牌推广' }],
      brands: []
    })
    const store = useStore()
    const menuList = computed(() => {
      const list = store.state.category.list.map(item => {
        return {
          id: item.id,
          name: item.name,
          children: item.children && item.children.slice(0, 2), // // 防止初始化没有children的时候调用slice函数报错
          goods: item.goods
        }
      })
      list.push(brand)
      return list
    })
    // 获取当前分类逻辑
    const currCategory = reactive({})
    const categordEvent = (id) => {
      currCategory.value = menuList.value.find(item => item.id === id)
      console.log(currCategory.value)
      return currCategory
    }
    // 获取品牌数据，尽量不用使用async再setup上
    findBrand().then(data => {
      console.log(data, 'data')
      brand.brands = data.result && data.result.slice(0, 6)
    })
    return { menuList, currCategory, categordEvent }
  }
}
</script>
<style lang="less" scoped>
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;
      text-align: left;
      &:hover {
        background: @xtxColor;
      }
      &.active {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }
  // 弹出层样式
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      text-align: left;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #e3f9f4;
          }
          img {
            width: 95px;
            height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
  .xtx-skeleton {
  animation: fade 1s linear infinite alternate;
}
@keyframes fade {
  from {
    opacity: 0.2;
  }
  to {
    opacity: 1;
  }
}
}
</style>
